<template>
  <div class="app-container">
  
    <!--查询表单-->
    <el-form :inline="true" class="demo-form-inline">

      <!-- 所属分类：级联下拉列表 -->
      <!-- 一级分类 -->
      <el-form-item label="课程类别">
        <el-select
          v-model="searchObj.subjectParentId"
          placeholder="请选择"
          @change="subjectLevelOneChanged">
          <el-option
            v-for="subject in subjectNestedList"
            :key="subject.id"
            :label="subject.title"
            :value="subject.id"/>
        </el-select>

        <!-- 二级分类 -->
        <el-select v-model="searchObj.subjectId" placeholder="请选择">
          <el-option
            v-for="subject in subSubjectList"
            :key="subject.id"
            :label="subject.title"
            :value="subject.id"/>
        </el-select>
      </el-form-item>

      <!-- 标题 -->
      <el-form-item>
        <el-input v-model="searchObj.title" placeholder="课程标题"/>
      </el-form-item>
 

      <el-form-item label="学院分类">
        <el-select
          v-model="searchObj.academyId"
          placeholder="请选择">
          <el-option
            v-for="i in academyList"
            :key="i.id"
            :label="i.name"
            :value="i.id"/>
        </el-select>
      </el-form-item>
      <el-button type="primary" icon="el-icon-search" @click="fetchData()">查询</el-button>
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>
    <!-- 表格 -->
    <!-- 表格 -->
    <el-table
      v-loading="listLoading"
      :data="list"
      element-loading-text="数据加载中"
      border
      fit
      highlight-current-row
      row-class-name="myClassList">

      <el-table-column
        label="序号"
        width="70"
        align="center">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>

      <el-table-column label="课程信息" width="300" align="center">
        <template slot-scope="scope">
          <div class="info">
            <div class="pic">
            <!-- <img :src="scope.row.cover" alt="scope.row.title" width="100px" height="100px">  -->
            </div>
            <div class="title">
              <a href="">{{ scope.row.title }}</a>
              <p>{{ scope.row.lessonNum }}课时</p>
            </div>

          </div>

        </template>
      </el-table-column>
      <el-table-column label="课程状态" width="80">
        <template slot-scope="scope">
          {{ scope.row.status==='Normal'?'已发布':'未发布' }}
        </template>
      </el-table-column>
      <el-table-column label="创建时间" align="center">
        <template slot-scope="scope">
          {{ scope.row.gmtCreate.substr(0, 10) }}
        </template>
      </el-table-column>
      <el-table-column label="发布时间" align="center">
        <template slot-scope="scope">
          {{ scope.row.gmtModified.substr(0, 10) }}
        </template>
      </el-table-column>
      <el-table-column label="价格" width="100" align="center" >
        <template slot-scope="scope">
          {{ Number(scope.row.price) === 0 ? '免费' :
          '¥' + scope.row.price.toFixed(2) }}
        </template>
      </el-table-column>
      <el-table-column prop="buyCount" label="付费学员" width="100" align="center" >
        <template slot-scope="scope">
          {{ scope.row.buyCount }}人
        </template>
      </el-table-column>
      <el-table-column prop="viewCount" label="浏览数量" width="60" />
      <el-table-column label="操作" width="150" align="center">
        <template slot-scope="scope">
         
            <el-button type="text" size="mini" @click="toinfo(scope.row.id)" icon="el-icon-edit">编辑课程信息</el-button>
        <el-button type="text" size="mini" @click="tochapter(scope.row.id)" icon="el-icon-edit">编辑课程大纲</el-button>
      
         
          <el-button type="text" size="mini" icon="el-icon-delete" @click="removeById(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页 -->
    <el-pagination
      :current-page="page"
      :page-size="limit"
      :total="total"
      style="padding: 30px 0; text-align: center;"
      layout="total, prev, pager, next, jumper"
      @current-change="fetchData"
    />

  </div>
</template><script>
import course from 'api/edu/course'

import subject from 'api/edu/subject'
import Academy from "api/edu/Academy";
import {mapActions, mapGetters} from 'vuex';
export default {
 components:{
   chapter_course:()=>import('views/Course/publish_course/chapter.vue'),
  info_course: () => import('views/Course/publish_course/info.vue'),
   
 },
  data() {
    return {
   
      preItem:{
          "menuId": "course_3",
          "menuNameCn":"新建课程",
          "iconCls": "el-icon-location",
          "children":[],
          "comp":"info_course",
          "url":"/info_course"
      },
         nextItem: {
          "menuId": "course_31",
          "menuNameCn":"课程大纲",      
          "iconCls": "el-icon-location",
          "children":[],
          "comp":"chapter_course",
          "url":"/chapter_course"
      },
      academyList:[],
      listLoading: true, // 是否显示loading信息
      list: [], // 数据列表
      total: 0, // 总记录数
      page: 1, // 页码
      limit: 10, // 每页记录数
      searchObj: {
        subjectParentId: '',
        subjectId: '',
        title: '',
        academyId:'',
        teacherId: ''
      }, // 查询条件
      teacherList: [], // 讲师列表
      subjectNestedList: [], // 一级分类列表
      subSubjectList: [] // 二级分类列表,
    }
  },

  created() { // 当页面加载时获取数据

 // this.searchObj.teacherId=this.$store.state.userinfo.id

     this.fetchData()
    // 初始化分类列表
    this.initSubjectList()
    // 获取讲师列表
 
    this.getAcademyList()
  },

 computed: {
    ...mapGetters([ // https://vuex.vuejs.org/zh-cn/getters.html
      'getCourseCurrentTab',
      'getCourseTabs'
    ])
  },
  methods:{
    ...mapActions([
      'courseAddTab',
       'courseRemoveTab',
    ]),
    tochapter(id){
      this.$store.state.course.currentCourseId=id
   
      this.courseAddTab(this.nextItem)

    },
    toinfo(id){
     
      this.$store.state.course.currentCourseId=id
     
      this.courseAddTab(this.preItem)

      
    },
    getAcademyList(){
      Academy.getAllAcaList().then(res=>{
        this.academyList=res.data.data.acaList
      })
    },
    removeById(id){
      this.$confirm('此操作将永久删除该记录, 是否继续?', '提示', {
        cancelButtonText: '取消',
        confirmButtonText: '确定',
        type: 'warning'
      }).then(() => {
        return course.deleteCourse(id)
      }).then(() => {
        this.fetchData()
        this.$message({
          type: 'success',
          message: '删除成功!'
        })
      }).catch((response) => { // 失败
        if (response === 'cancel') {
          this.$message({
            type: 'info',
            message: '已取消删除'
          })
        } else {
          this.$message({
            type: 'error',
            message: '删除失败'
          })
        }
      })
    },
    fetchData(page = 1) { // 调用api层获取数据库中的数据
      this.page = page
      this.listLoading = true
      course.CourseList(this.page, this.limit, this.searchObj).then(response => {
          this.list = response.data.data.rows
          this.total = response.data.data.total
        
        this.listLoading = false
      })
    },

  

    initSubjectList() {
      subject.getSubjectList().then(response => {
        this.subjectNestedList = response.data.data.items
      })
    },

    subjectLevelOneChanged(value) {
      for (let i = 0; i < this.subjectNestedList.length; i++) {
        if (this.subjectNestedList[i].id === value) {
          this.subSubjectList = this.subjectNestedList[i].children
          this.searchObj.subjectId = ''
        }
      }
    },

    resetData() {
      this.searchObj = {}
      this.subSubjectList = [] // 二级分类列表
      this.fetchData()
    }
  }
}
</script>
<style scoped>
.myClassList .info {
  width: 450px;
  overflow: hidden;
}
.myClassList .info .pic {
  width: 150px;
  height: 90px;
  overflow: hidden;
  float: left;
}
.myClassList .info .pic a {
  display: block;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}
.myClassList .info .pic img {
  display: block;
  width: 50%;
}
.myClassList td .info .title {
  width: 50px;
  float: left;
  height: 90px;
}
.myClassList td .info .title a {
  display: block;
  height: 48px;
  line-height: 24px;
  overflow: hidden;
  color: #00baf2;
  margin-bottom: 12px;
}
.myClassList td .info .title p {
  line-height: 20px;
  margin-top: 5px;
  color: #818181;
}
</style>
